iOptron HEM27 Hybrid Equatorial Mount w/ iPolar for 0-22° Latitudes

Brand: iOptron


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  • Imagine a mount head weighing in at 8.15lbs with a payload capability 29.74lbs, without needing a cumbersome counterweight or shaft
  • State of the art strain wave drive technology
  • Hybrid equatorial operation
  • Tripod sold separately

Product Details

  • Introducing the HEM27 and the HEM27EC, iOptron’s revolutionary hybrid strain wave drive mounts. These light weight, high payload tiny titans will deliver an astronomy experience like never before. Imagine a mount head weighing in at 8.15lbs with a payload capability 29.74lbs, without needing a cumbersome counterweight or shaft. Applying iOptron’s multi decade experience creating precision mounts, the HEM27 brings this vision to reality.

    iOptron HEM27 Harmonic Drive Mount Side View

    Utilizing state of the art strain wave drive technology for the RA movement in tandem with backlash-free DEC worm/belt drive design, the HEM27s deliver unparalleled weight to payload efficiency. Its black anodized all metal CNC machined body is not only appealing to the eye, it’s a rugged platform that will perform at the highest level for many years to come. Unique features such as an electronic friction break and power down memory allow the mount safely stop and resume a GoTo slew or continue tracking even after an abrupt power loss (No need to realign and start from the beginning).

    A HEM27 mount can be controlled by a computer, either via ASCOM/Commander for a Windows PC or a third party INDI driver for a MacOS software; a SmartPhone/Tablet via iOptron Commander Lite or an App like SkySafari; or a Raspberry Pi device via INDI driver.

    The HEM27EC features a high precision RA axis encoder that delivers incredible tracking accuracy, enough that many will choose to image “sans” guiding.

    iOptron HEM27 Harmonic Drive Mount Back View


    • Advanced strain wave drive technology
    • Payload capacity of 13.5 kg (29.7 lbs) with the mount weight of 3.7 kg (8.15 lbs)
    • CNC machined
    • Unique friction brake to safely stop movement during a planned or unplanned power interruption
    • 360 second gear period
    • Permanent periodic error correction (PPEC)
    • Go2Nova® hand controller with ~212,000 object database
    • iPolar electronic polar scope for easy and accurate polar alignment
    • Cable management system, no hanging exterior cables to moving parts
    • Dual saddle (Vixen and Losmandy-D styles)
    • Built in zero position search and locator
    • Power down position and location memory
    • Integrated ST-4 autoguiding port
    • Built-in Wi-Fi(via hand controller)
    • USB port for firmware upgrade and computer control
    • Soft carrying case
    • Two year warranty
    iOptron HEM27 Mount Case and Accessories
  • specifications

    Database212000 Objects
    Drive TypeStrain Wave 17
    Free ShippingYes
    Head DesignHybrid
    Instrument Capacity29.7 lb
    Latitude Range15 to 65 Degrees
    Mount Head Weight8.2 lb
    Periodic Error Correction (PEC)Yes
    PortsDC12V 5A
    PortsUSB 2.0
    Power Supply100 to 240V
    Telescope ConnectionDual Vixen & Losmandy
    Warranty2 years
  • included items

    • HEM27 mount head
    • iPolar
    • Go2Nova® hand controller
    • Soft carry case
    • AC power adapter

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